b'GTA TRACK-WARRIOROptional - Tailored Bump Stop Package: Advanced Bump Stop Set-up Tailored for You by Ron Sutton OptionalCrates Consistent, Confident Braking & Corner Entry Drive it DeepNo Worries. Easily Tunable in Under a Minute Specific Progressive Rate Bump Stops for Soft Landing Shim Assortment & Ron Sutton Track Tuning Guide IncludedTech Tip 17: All suspension springs are not created equal. The spring steel material & theprocesses utilized in manufacturing the spring, play a big role in the PERFORMANCE of thespring. For decades all production car & race springsleaf & coilwere made with 2000 series steelbasically crapthat responded slow, sagged & lost rate with time & use.Hyperco came out coil springs made with 4000 series steel for Indy Cars back in the 80s. The4000 series steel is simply a superior steel to the 2000 series. Much more expensive, but it sags less, loses rate less & responds faster than 2000. Today, AFCO, Eibach & others spring manufactures make coil springs from 4000 series steel.Japanese firm Swift makes springs with 5000 series steel that are better than the all the 4000 series steel springs. Again, a little more money, but better. But the very best springs are made from 9000 series spring steel from Renton & Draco. Amazingly quick response. No sag. Zero. No rate loss. Ever. Renton makes NASCAR springs. No coil-overs. Draco has a full line.In on track tests with data loggers & shock travel sensorscomparing 4000 series springs to Draco 9000 series springswith the exact same rateshave proven to make the suspension respond quicker, create more grip & run faster lap times. Funny thing is, were only talking a little bit more money. Draco coil-over springs are about $40 more than Hyperco, Eibach, AFCO, etc. The more you knowthe faster you can go.Tech Tip 26: Bump Stops are often clouded in mystery. In reality, there are a simple tuning tool for corner entry under braking. If you have the right setup, they stop the front end dive at your target travel amountevery time . consistently, even if your driving is not.Bump stops increase the wheel rate & load the front tires more than regular setups & keeps the rear tires loaded too. That consistent grip is confidence inspiring, while allowing the driver to learn the track, experiment with deeper braking zones & even make errors, without crashes. Tuning? If the car is loose on entry under braking & turn in, add more shims. If the car is tight or pushy under braking & turn in, remove shims. Yes, it is that easy if you have the right bump stop rate curve. Ron can provide you with the rate charts for all the air & polyurethanebump stops we use, as well as set you up with the optimum starting place for air or poly bumps.On rough tracks we run softer rate bump stops. On smoother tracks, we can run stiffer rate bump stops to gain more grip & quicker lap times. Pro racers looking for every ounce of grip & lap time will run very high rate bump stops, as long as the track is smooth enough.Ron will share more tuning tips with you once you have your bump stop setup. 85'